Looking at the browser console, selectpicker doesn’t exist. You can use the resources link on the left panel to add a link to it. Here’s a CDN source that gives easy access to what you need. https://cdnjs.com/libraries/bootstrap-select
It looks like you have four nearly identical sets of code for handing the transfer. It will be easier to understand things by bringing those requirements all together into one function, which I’ll look at doing first. That way I’ll also gain a better understanding about the code when it comes to delving further into resolving the problem.
@Paul_Wilkins I see! I m not that good at javascript/jquery , i did built this for a very long time and cant rebuild it now Anyways will try to fix it as it is! Thanks!